my RRX, when I refuelled last week, I noticed it was hard to open the fuel cap, it slipped my mind until tonight when I went to lube it, and guess what, damn thing wouldnt open, as the key wouldnt turn in the lock. The main key was just twisting each time I tried, and i straightened the key again in a vice, PLUSGAS into the key lock , and still no joy. even the spare key wouldnt work. i let it sit an hour, jiggled it again with the main key, and YEHAA, it opened, received a dose of WD40, and seems fine now. made my brow sweat for a while tho!! think i#ll get a new key as it should be strong.... my keys are 13 yrs old!! and maybe investigate the keyless fuel locks, as this has happened to a degree the last 2 years, this being the worst.

After 11 years mine got sticky as well, WD40 worked to free it up. But WD40 will evaporate, I recommend using spray graphite or synthetic oil to lube it. At least it hangs around for a while, A lot of racers use the screw type keyless gas caps. I personally haven't used one